Signal alarm



April 30, 1929. 5. J. MACHOSKY S I GNAL ALARM Filed Sept. 9, 1927 0 O 0O O O o ooooooooooo INVENTOR. dag

Shulem mgr 5 ATTORNEYS.

Patented Apr. 3%, 1929.

PATENT OFFICE.

'SHULEM J. IYIARCHO'SKY, OF CEISTOBAL, CANAL ZONE.

SIGNAL ALARM.

Application filed September 9, 1927. Serial No. 218,501.

This invention relates to an electrically operated alarm adapted to beplaced in or near banks, hotels, places of business, res1- dences or thelike, for the purpose of sounding an alarm and fri htening away robbersor other persons with evil intent. v

One object of the invention is to provide a series of alarms adapted tobe set in operation simultaneously.

Another object is to provide a series of alarms, both audibleand'visible, whereby the attention of police and passersby is attractedand robbers will believe that they are being fired upon.

Another object is to provide an alarm comprising visible and audiblesignals which are set in operation upon the closure of a singleelectrical circuit.

With the above and other objects in view which will appear as the natureof the invention is understood, the same consists in the improvedconstruction and novel arrangement of parts which will be hereinafterfully described and particularly pointed out in the claim. a

In the accompanying drawings,

Figure 1 is a front view of the signal alarm showing conventionallytherelative locations of the various parts;

Fig. 2 is a side View of the interior of the alarm box;

Fig. 3 is a detailed view of an electric cannon forming a part of thisinvention; and

4: shows a protective screen element.

Referring to the drawings in detail, numeral 1 indicates a casing withinwhich the various alarm elements are mounted. Said elements include hell2, siren 3, red light 4., illuminated red sign 5, and a detonatingcannon 6. The bell 2 and siren 3 are mounted upon a vertical partition 7which is braced by members 8. The sign member 5 is carried on supports 9while the cannon is carried by supports 10.

A protective screen 11 is provided upon the front side of the casing 1,for the purpose of preventing access to the interior of the casing andtampering with the signal elements. Openings 12 are provided in thescreen to afford visibility for lamp 1 and for the discharge of thecontents of the cannon.

'A larger opening 13 provides for visibility of the illuminated sign 5.Said sign is in the form of a distress signal and in its preferred formcomprises a series of red lights arranged so as to spell the word Help.

The current for operating the signals is taken from line wires 14 bymeans of a switch 15 and conductors 16. Branch conductors 17 areextended to the cannon at 18 and to the bell at 19. The signal elementsat the top of the casing are connected in parallel between branchconductors 20.

An important part of this invention is the provision of a novel form ofdetonating cannon which is adapted not only to make a loud explosionupon discharge but which also ejects a dense smoke which is clearlyvisible. An electric fuse or igniting device 21 is located adjacent amass 22 of phosphorous and sulphur and the latter becomes ignited by theA incandescence of the fuse 21. A mass of gunpowder preferably retainedby a wad or the like 23 is located in front of the mass 22 and in turnis heated to the combustion point for the purpose of ejecting wad 2 1and making an explosion. A mass of asbestos cotton or the like 24 isforced into the muzzle of the cannon to keep out moisture as well as toassist in the explosive force.

The operation of the device is obvious. l/Vhen the presence of robbersis detected by a watchman or other person on duty the latter has only toclose switch 15 to start the alarm, all separate parts of which willoperate simultaneously. The noise made by the bell, siren and cannonwill be detected for a long distance'while the red light and distresssign will indicate the exact position of the building protected by thealarm. The dense smoke discharged from the cannon will be seen forseveral squares away, and the police and passersby will be called to thescene. The alarm can be made automatic by arranging the switch'so astobe closed by the opening of a door or window or the like.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is An electric signal alarm comprising acasing, a vertical partition in said casing, an audible signal mountedon said partition, an electric cannon in said casing and extendingthrough saidpartition and supported at its rear end thereby, meansassociated with said cannon for discharging dense smoke therefrom, aprotective screen mounted on the front of said casing, said screenhaving an opening adjacent the muzzle end of said cannon permitting freedischarge therethreugh of'the contents of the cannon, an electric signcomprising red lamps forming a distress Word in said casing, an openingin said screen adjacent said distress Word, and electric means forsin'niitaneousiy operating said signal said cannon and said distresssign. 10

In testin'iony whereof I have afiixed my signature.

SHULEM J. MARCHO SKY.

